Just replaced my last MacBook Pro with a new quad-core version that came with Lion installed already. Unfortunately, none of my music programs are currently compatible. I'm a former long-time user of DP, but haven't used it since Version 5. I had been doing some research and saw that 7.24 is Lion-compatible, so I am thinking about upgrading to DP7. I'd love to hear from those of you using DP in Lion on whether you're having great success or not. FWIW, my only audio interfaces right now are an M-Audio Firewire 410 and an old MOTU 2408 MKII... Regardless of which direction I go, it's going to cost me some money to get up and running with this machine, but I'd love as few surprises as possible.
